Gas-producer.



W. KCHA-PMAN.

. GAS PRODUCER. I Armani-non run'n n50. 29, 1905.

' WITNESSES} Patented Dec. 12,1911;

at the bottom. agitated and kept in proper condition by UNITED STATES PATENT OFFICE.

WILLIAM .B. CHAPMAN, OF NEW YORK, N. Y., ASSIGNOR TO WALTER IB. HOPPING. TRUSTEE, OF NEW YORK, N. Y.

GAS-PRODUCER.

Specificatio'n of Letters Patent.

Patented Dec. 12, 1911.

Application filed December 29, 1905. Serial No. 293,754.

proved Gas-Produccr, of which the following is a full, clear, and exact description.

The object of my invention is primarily to provide a gas producer of high thermal efliciency, through the agency of which a clean gas, rich in heat units, may be produced from bituminous coal.

I have here shown my improvements as embodied in a down draft producer with a fuel feed device and blast arrangement at the top of the producer and gas outlet flue The fuel and ash strata are means of two agitating beams which are hollow for the circulation of cooling'ivater, and which extends diametrically across the producer, the beams being carried by rotating sections of the producer walls. These rotating wall sections are circular and have water sealed connection with the stationary walls of the producer. The upper beam is arranged not only to rotate a part of the incandescent fuelv relatively to the other, but to force it downward into a compact mass. This operation prevents the formation of blow holes, and the beam acts as a spreader to force outward part of the fuel and maintain level the top surface of the fuel above the beam. The lower agitating beam operates in the ash pan and strokes upward to act on the fuel bed through the ash. The lower agitating beam serves also as a cap or hood covering the downtake outlet for the gas and preventing the entry of ash into the same. 4

Various other features of importance are involved, and all will be fully set forth here inafter and claims. p I

Reference is to be had to the accompanying drawings which illustrate as an example the preferred embodiment of my invention,

particularly pointed out in the in which drawin'gs Figure 1 is an enlarged vertical section of the producer QFIQ'. 2 is a detail view showing the plow for automatically throwing the ash to the sides of the ash-pan; and Fig. 3 is a detail cross section of the bottom agitating beam.

The producer is erected on asuitable foundation as indicated at 10 in the drawings. A framing 12 is erected for the producer on the foundation 10, which framing supports the parts of the producer, such as a charging floor 14. Above-the framing 12 is overhanging frame 15 which supports parts of the charging mechanism.

16 indicates the ash pan of the producer. It is preferably constructed of concrete. The body of the producer is formed of a; lower rotating section 17, a lower stationary section 18, an upper rotating section 19, and an upper-stationary section or dome 20. These parts are circular and are arranged in vertical alinement to form continuous pro- .ducer walls. The lower rotating section 17 is provided with an annular rack 21 which runs on rollers 22 supported by brackets 23 attached to parts of the frame 12. The lower 1 stationary section 18 is rigidly secured to the frame 12 by means of brackets 24. The upper rotating section 19 has an annular rack 25 similar to the rack 21 and running on rollers 26 carried by brackets 27 attached to the frame 12. Theupper stationary section or dome 20 is sustained by cross beams 28 attached to and forming parts of the frame 12. Motion for imparting to the sections 17 and 19 their characteristic rotation may be taken from any suitable source, forinstance from a prime mover 29 which carries a worm 30in mesh with a worm wheel 31 driving a shaft 32. This shaft has a sprocket and chain gear 33 connecting it with a shaft 34, mounted opposite the lower section 17 and provided with a bevel pinion 35 running on the annular'rack 21. The shaft 32 also carries a bevel pinion 36, and

this is in mesh with, the rack 25. Owing totheratio of the gearing 33 the shaft 34 is operated at a lower speed than the shaft 32, and consequently the lower section 17 runs slower than the upper section 19.

The lower agitating beam is. shown in Figs. 2 and 9. It is formed hollow'of metal, and is formed on its upper side with oppositely disposed diagonal surfaces37. The agitating beam' is arranged to rotate inthe direction indicated by the arrow in Fig. 3, so that its inclined upper surfaces 37 tend to force upward the. ashes. The Lmiddle portion of the beam is formed on opposite sides with arc-shaped extensions 38 which of the producer, breaking down the ash at these points andopreventing clinkering of the same. Said lower agitating beam is .mounted fast in and extends diametrically across the section 17 of the producer, this section sustaining the beam and carrying the beam around continuously, as explained. The ends of the lower agitating beam, as indicated at 41, are open to permit the entry and discharge of the cooling water, which is circulated completely through the beam to cool the same and prevent its destruction from heat. The lower part of the section 17 is provided with a downwardly projecting bracket 43 which carries a spirally arranged plow 44, best shtlwn in Fig. 2.' This plow is provided at its inner end with a roller 45 which is arranged to bear against the down take flue 39, and said plow rotating in the direction indicated by the arrow in Fig. 2 in sweeping around through the. ash pan 16 forces the ash outward over the sides of the pan where the ash may be convenientlyshoveled away. At its top the rotating section 17 carries directly above the lower agitating beam an annular pan 46 into which dips an annular rib '47 depending from the lower stationary section 18. This pan is adapted to be filled with water, thus forming a water seal between the two sections 17 and 18, and preventing the escape of gas.

The top of the lower section 18 carries a pan 48 and into this pan dips an annular rib 49 depending from the upper rotating section 19, thus effecting a water seal between the two parts. The upper agitating beam is carried rigidly and extends diametrically across the lower ortion of the upper rotating section 19, an said beam has in its under surface oppositely arranged inclinations 50, one of which is shown in Fig. 2, the other lying at the opposite side of the beam. The beam is also provided at the upper edge of each inclined surface 50 with a plane portion 51. The rotating section 19 and its beam cause a twisting action of. the upper part of the incandescent fuel with respect to the lower art of such fuel in the stationary section 8 and the beam forces downward the incandescent fuel by reason of its surfaces! 50, thus maintaining the fuel in a compact mass and destroying any blow holes or chimneys which would otherwise form in the fuel. At the same time the plane surfaces 51 of the upper agitating beam sweep around from as upper oart of themass of fuel and spread the same,

-out level, at the same time forcing a part of or dome 20, thus water-sealing the connection between the dome and upper rotating section. Coolingwater is supplied to the body of the producer through a pipe 56 passing from any suitable source. This pipe discharges into the pan 54, and from said pan it overflows through a pipe, 57 into the upper agitating beam. The water runs through this beam and is thence discharged through a spout 58 into the pan 48, and from this pan it runs into a pipe 59. Said pipe is provided at its lower end with a cook 60 which is arranged to permit water to drip slowly into the pan 46, and in the example here given the pipe 59 has a branch 61 which carries the water to the economizer 90. Such example also supposes that the water overflows from the economizer through a pipe 62 and discharges into the pan 46. The pan 46 has an overflow spout 63 discharging the water into the opening 42 of the lower agitating beam. This water passes from the end 41 of the beam outthrough a pipe 64 into the ash pan 16, where it quenches the coals that may be burning in the ash and overflows from the top of the ash pan through the spout 65.

The dome 20 is provided with an'opening in which is placed a cone 66 having an opening therein closed by a ball 67. This opening permitsthe insertion of a bar into the producer to bar down the fire, the ball rolling away from the hole as the bar is inserted, and returning to seal the hole as the bar is removed. On the top of the dome 20 is arranged a charging means 68 which, as far as the present case is concerned, may be of any desired form.

The gas is drawn by suction through the down-take pipe 39 of the producer into a conduit 89 on the foundation l0, thence to the point of use.

In the operation of the producer the body is filled with ashes and fuel and a fire is started. The fuel is charged into the producer through the charger 68. The sections 17 and 19 are caused to rotate, as before explained, thus bringing about the novel operation of the sections and agitator. bars. Further these bars working against each other force the incandescent fuel into a com ton-ms thorough water cooling of all destructible 5 parts of the producer. By mounting these agitating bars on the rotatable sections of the body of the producer, I avoid intro ducing into the producer a rotary driving shaft or other element which it is difiicult to cool and at best is short lived owing to the intense heat to which it is continuously subjected. The agitating bars may be made of suflicient cross sectional area to carry a large stream of cooling water, thus insuring complete cooling of the beams. This is also true of the hood 38 which overhangs the down-take flue 39, it having been heretofore practically impossible to mount this hood or cap so that it will resist the intense heat within the producer. By means of my improvement I not only mount the agitating beam, but also the hood, and water cool both of these parts.

Also I have so arranged my improvedplant that its operation may be carried on practically continuously owing especially to the provision.

Having thus described the preferred form of my invention, what I claim as new and desire to secure by Letters Patent is:

1. A down-draft gas producer having a gas outlet at its bottom, an agitating beam extending horizontally across the interior of the producer above the outlet, said beam having enlargements at its sides forming a cap projecting the gas outward, and means for mounting the agitating beam and cap to move horizontally in the producer around the central axis thereof.

2. A gas producer having a stationary upper section or dome, an upper movable section located under the same, a lower stationary section located under the upper movable section, anda lower movable section located under the lower stationary section, water seals between said sections, means for rotating the inovable sections, and an agitator carried by each movable section. 3. A gas producer having a stationary upper section or dome, an upper movable section located under the same, a lower stationary section located under the upper movable section, and a lower movable section located under the lower stationary section, water seals between said sections, means for rotating the movable sections, and an agitator carried by each movable section,

the upper agitator operating in the fuel bed and stroking down, and the lower agitator operating in the ash stratum and stroking up.

4. A down-draft gas producer having at its base a down-take gas flue, an agitating beam in the producer and extending-horizontally across the same over the down-take flue, said beam sustaining a cap covering the mouth of the down-take flue, and means for mounting the agitator to move horizontally in the producer.

5. A down draft gas producer having a rotating section-a centrally located outlet 'flue in the bottom of-the producer, a tangentially disposed plow operating in the bottom of the producer with its inner end adjacent to the side of the gas outlet, means for connecting the plow to said rotating section of the producer to drive the plow and a roller attached to the inner end of the plow and running against the side of the outlet flue.

6. A gas roducer the body of which is composed o' a plurality of superimposed cylindric sect-ions, means for mounting them to rotate independently, water seals between the producer sect-ions, a stationary top section, means for diversely rotating the rotatable sections, and agitator beams extending "horizontally across between opposite walls of the rotatable producer sections.

7. A gas producer the body of which is composed of a plurality of superimposed sections, means for mounting them to rotate independently, seals between the producer sections, a stationary top section, means for diversely rotating the rotatable sections, agi-- tator beams extending horizontally across between opposite walls of the rotatable producer sections, and a'stationary producer section mounted between the rotatable sections.

8. A gas producerhaving a plurality of producer sections, means for mounting them one above the other to rotate independently, means for independently rotating said sections and agitator beams carried by .the rotating sections and extending horizontally across them.

9. A gas producer having a plurality of cylindric producer sections, means for mounting them one above the other to rotate independently, means for independently and a cap on thelower beam covering the 10. A gas producer having a flue at its bottom, a horizontally disposed agitating beam extending over the same, said beam carrying a cap covering the flue, and means for mounting and operating the agitating beam.

- 11. A gas producer the body of which is composed of two rotatable sections between which is interposed a stationary section, means for rotating the rotatable sections. and agitator beams extending across between the rotatable sections.

12. A gas producer the body of which is composed of two rotatable sections between which is interposed a stationary section,

means for rotating the rotatable sect-ions,

agitator beams extending across between the rotatable sections and a stationary top section above the upper rotating section.

13. A gas producer the body of which is composed of two rotatable sections between which is interposed a stationary section, means for rotating the rotatable sections and agitator beams extending across 'between the rotatable sections the lower rotating section inclosing and twisting the ash and the upper section inclosing and twisting the upper part of the incandescent fuel wit ing the'upper part of the incandescent fuel 25 with respect to the lower part of such fuel in the intermediate stationary section.

15. A gas producer having a fiueat its bottom, a horizontally disposed agitating beam extending over the same, said beam carrying a cap covering the flue, means for mounting and operating the agitating beam and a diagonally disposed plow attached to the agitating beam near the end thereof and moving with the same in the producer.

16; A gas producer having a rotating body section, an agitating beam extending horizontally across the same and moving therewith, and a diagonal plow crossing and secured to the beam. and moving with the same in the producer.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM B. CHAPMAN.

\Vitnesses:

ISAAC B. OWENS, EVERARD B. MARSHALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

